Detroit Tigers, Cardinals, and Mariners: Three MLB Repricing Events on August 9

Detroit Tigers at San Francisco Giants was carried by eleven venues on August 9. The fixture produced two separate repricing windows, each on a different side of the market.

In the first, Gemini moved the Giants from 43% to 49.5% over three minutes, finishing at 20:10 UTC. BetMGM was recorded at 45.9% seven minutes after that point. BetMGM reached the new Giants level 23 minutes after the Gemini move completed.

In the second, Polymarket repriced the Detroit Tigers from 33.5% to 56.5% inside two minutes, ending at 21:02 UTC. Gemini was recorded with the Tigers at 55% nine minutes after the Polymarket move closed.

Colorado Rockies at St. Louis Cardinals

Eleven venues carried Colorado Rockies at St. Louis Cardinals. Kalshi moved the Cardinals from 58.5% to 63.5% over three minutes, finishing at 18:45 UTC. DraftKings was recorded at 54.6% fourteen minutes after that point. DraftKings reached the Cardinals' new level 30 minutes after the Kalshi move.

Tampa Bay Rays at Seattle Mariners

Eleven venues also carried Tampa Bay Rays at Seattle Mariners. Polymarket repriced the Mariners from 33.5% to 54.5% inside two minutes, ending at 20:25 UTC. Gemini was recorded at 59% on the Mariners side thirteen minutes after the Polymarket move closed.

Across three MLB fixtures on August 9, repricing windows at the first-moving venue ran two to three minutes. DraftKings recorded the longest secondary response: 30 minutes behind Kalshi on the Cardinals.